What does that mean? Well, depending on your region, ISP, and a bit of luck, you'll hit different Google servers, at different places, etc.
Some of them have different things, some of them have new updates others don't, etc.
Which may be an explanation for the author having issues (then again it's just ONE possibility).
Specially it could be that regular HTTP was failing and not SPDY for example.
Personally I haven't had that either.